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1. 发明专利

JP2000043255A INK-JET HEAD 失效
公开(公告)号：JP2000043255A
公开(公告)日：2000-02-15
申请号：JP23456799
申请日：1999-08-20
申请人： SEIKO EPSON CORP
发明人： USUI MINORU , SONEHARA HIDEAKI , OYAMA NORIKO
IPC分类号： B41J2/045 , B41J2/055
摘要： PROBLEM TO BE SOLVED: To provide an ink-jet head which can secure a sufficient discharge speed, a sufficient discharge amount of ink drops even when formed in a high- density cavity structure. SOLUTION: An ink tank 24 and a cavity 18 are set via an ink feed path in a thicknesswise direction of a passage substrate. Therefore, even when the ink-jet head is formed in a high-density cavity structure, a sufficient discharge speed, a sufficient discharge amount of ink drops are secured.

2. 发明专利

JPH09241552A WATER-BASE INK 失效
公开(公告)号：JPH09241552A
公开(公告)日：1997-09-16
申请号：JP4902796
申请日：1996-03-06
申请人： SEIKO EPSON CORP
发明人： OYAMA NORIKO
IPC分类号： C09D11/00 , C09D11/02 , C09D11/033 , C09D11/037 , C09D11/322 , C09D11/328 , C09D11/38
摘要： PROBLEM TO BE SOLVED: To prevent the deposition of an ink onto a nozzle plate. SOLUTION: This water-base ink comprises at least water, a water-soluble org. solvent having a lower vapor pressure than water, at least one hydrophobic colorant selected from oil-soluble dyes, disperse dyes, and pigments soluble in the water-soluble org. solvent, and a hydrophobic resin soluble in the water- soluble org. solvent, wherein the resin comprises at least an acidic resin and the pH of the ink is greater than 7.

3. 发明专利

JPH07305009A WATER-BASE DISPERSED INK FOR INK-JET RECORDING 失效
公开(公告)号：JPH07305009A
公开(公告)日：1995-11-21
申请号：JP9886894
申请日：1994-05-12
申请人： SEIKO EPSON CORP
发明人： OYAMA NORIKO
IPC分类号： C09D11/00 , C09D11/328
摘要： PURPOSE:To provide a water-base dispersed ink for ink-jet recording, composed of water, a water-soluble organic solvent, a coloring agent and a specific compound, giving durable printed matter, having excellent ejection stability, storage stability and abrasion resistance and useful for printer, copying machine, etc. CONSTITUTION:This water-base dispersed ink for ink-jet recording is composed of (A) water, (B) a water-soluble organic solvent such as ethylene glycol, (C) preferably 0.5-20wt.% of an oil-soluble dye and/or a disperse dye soluble in the component B as a coloring agent (having particle diameter of preferably 30-500nm) and (D) a compound having an HLB value of 5 10 determined by the formula and a water-solubility of >=5wt.% and containing >=2 hydroxyl groups in one molecule (the melting point is preferably >=40 deg.C and the molecular weight is

4. 发明专利

JPH03104645A INK JET HEAD 失效
公开(公告)号：JPH03104645A
公开(公告)日：1991-05-01
申请号：JP24115589
申请日：1989-09-18
申请人： SEIKO EPSON CORP
发明人： USUI MINORU , OYAMA NORIKO
IPC分类号： B41J2/045 , B41J2/055
摘要： PURPOSE:To stabilize a directional property of flying and to stick ink to a specified position always in a constant form by a method wherein a mechanism in which a nozzle discharges ink rotating it is provided. CONSTITUTION:A spacer 10 determines a gap between a nozzle forming substrate 20 and a pressure generator 30. A nozzle 21 is formed to the nozzle forming substrate 20. The pressure generator 30 is a laminate of a 100mum PZT 31 and a 50mum Ni 32. Further, the PZT 31 is so connected that an electric field applies in a 100mum thickness direction. The nozzle 21 consists of a central circular part 21a and three feather like parts 21b extended from the circular part 21a. The nozzle 21 is so constructed that an opening area is small to an ink discharge side and a side face 20a side of the nozzle forming substrate 20 and as approaching its opposite 20b side, the opening area increases gradually in size.

5. 发明专利

JP2000063723A INK COMPOSITION 失效
公开(公告)号：JP2000063723A
公开(公告)日：2000-02-29
申请号：JP22170999
申请日：1999-08-04
申请人： SEIKO EPSON CORP
发明人： SHINOZUKA SHOICHI , NAKAMURA HIROTO , KANBAYASHI KENICHI , MARUYAMA YAEKO , OYAMA NORIKO , ONISHI HIROYUKI
IPC分类号： B41J2/01 , B41M5/00 , C09D11/00 , C09D11/326 , C09D11/328 , C09D11/36 , C09D11/38
摘要： PROBLEM TO BE SOLVED: To obtain an ink composition usable for printing a paper in general use in a thick ink without causing any blur of characters and images and for presenting a printed matter for printing good in dryability and free from any tails by including a coloring component in a resin insoluble in the dispersion medium. SOLUTION: This composition comprises (A) a coloring matter (e.g. basic azo dyes) and (B) a dispersion medium dispersedly holding the component A, wherein the component A is contained in a resin insoluble in the component B and the resin is dispersed in the dispersion medium in the form of particulates. Preferably, the composition further comprises (C) a dispersant and the component B is made of an organic solvent of e.g. a normal paraffin-based hydrocarbon.

6. 发明专利

JPH04234679A OPTICAL PRINTING MACHINE 失效
公开(公告)号：JPH04234679A
公开(公告)日：1992-08-24
申请号：JP48191
申请日：1991-01-08
申请人： SEIKO EPSON CORP
发明人： UEHARA MASAMITSU , KITAMURA KAZUHIKO , OYAMA NORIKO , TANIGUCHI MAKOTO , ISHII ISAO , MIZUMA ISAO
IPC分类号： B41J2/385 , B41M1/00
摘要： PURPOSE:To make clear printing without nonuniformity available with ink thoroughly kneaded and made available for application without gathering in one point. CONSTITUTION:An ink applying roller 9 and an ink transfer roller 10 are made in the width wider than that of a body 1 on which transfer is made. The ink applying roller 9 and the ink transfer roller 10 are made capable of moving toward a contact surface where the transfer roller 10 comes in contact with the body 1 on which the transfer is made.

7. 发明专利

JPH04187434A IMAGE FORMING APPARATUS 失效
公开(公告)号：JPH04187434A
公开(公告)日：1992-07-06
申请号：JP31754890
申请日：1990-11-21
申请人： SEIKO EPSON CORP
发明人： UEHARA MASAMITSU , KITAMURA KAZUHIKO , MIZUMA ISAO , TANIGUCHI MAKOTO , ISHII ISAO , OYAMA NORIKO
IPC分类号： B41C1/10 , B41N3/08
摘要： PURPOSE:To stably provide good image quality having high resolving power over a long period of time by providing a mechanism for removing the surface of a photosensitive layer deteriorated in sensitivity and lost in surface smoothness periodically or if necessary at a time other than a printing process. CONSTITUTION:A cleaning unit 9 removes the photosensitive layer 2a of an LB film 15 and the release layer 3b being the adjacent lower layer thereof one by one in a removing process at the time of non-printing. By this method, a new photosensitive layer 2c is exposed. In the removing process, after the optical isomerizing substance contained in the photosensitive layer 2a is subjected to repeated optical reaction roughly 10000 times or at a definite time interval, the photosensitive layer 2a whose surface generates the deterioration in sensitivity and scratch resistance due to highly repeated optical reaction is removed along with the release layer 3b being in contact with the photosensitive layer 2a if necessary when an image is deteriorated. The paper powder or dust mixed at the time of transfer fixing and incapable of being removed only by the cleaning process is also removed along with the photosensitive layer 2a in the removing process.

8. 发明专利

JPH0499638A ON-DEMAND TYPE INK JET PRINT HEAD 失效
公开(公告)号：JPH0499638A
公开(公告)日：1992-03-31
申请号：JP21842690
申请日：1990-08-20
申请人： SEIKO EPSON CORP
发明人： OYAMA NORIKO , USUI MINORU
IPC分类号： B41J2/045 , B41J2/055 , B41J2/16
摘要： PURPOSE:To form an appropriate piezoelectric element array to be arranged in an ink tank and allow generation of ink droplets with a sufficient scattering capability even at low voltage by laminating a piezoelectric material over a conductive material alternately in the form of a laminated layer, then baking them to form a piezoelectric element array and arranging a partition member between piezoelectric elements. CONSTITUTION:A partition member 10 is formed between piezoelectric elements 12, 12... which constitute a piezoelectric element array. An independent cable 6 is connected to an external conductive layer 60 to which one electrode is connected, while a common lead member is connected to an external conductive layer 62 to which the other electrode is connected. When an electric signal is connected to an area between the independent cable 76 and the common lead member, piezoelectric materials 34, 34, 34... become elongated simultaneously between the electrodes, if the signal is selectively connected to the independent cable 76. Subsequently, the displacements of the piezoelectric materials in the layers are added together to displace the free end 12a side in 'X' direction. A voltage applied to an area between electrodes 30, 32 has only to be at an extremely low level.

9. 发明专利

JPH08188732A DISPERSION-TYPE INK FOR INK-JET RECORDING 失效
公开(公告)号：JPH08188732A
公开(公告)日：1996-07-23
申请号：JP360395
申请日：1995-01-12
申请人： SEIKO EPSON CORP
发明人： OYAMA NORIKO
IPC分类号： C09D11/00 , C09D11/02 , C09D11/033 , C09D11/037 , C09D11/322
摘要： PURPOSE: To provide the subject ink containing a pigment, water, a water-soluble polymer and a specific monomer or polymer (or its metal salt), having excellent ejection stability, scratch resistance and water resistance and suitable for an ink-jet recording printer, copying machine, etc. CONSTITUTION: This ink contains (A) a pigment, (B) water, (C) a water-soluble polymer (e.g. PVA having a weight-average molecular weight of 2,000-1,000,000) and (D) a monomer of formula I (X and Y are each COOH or CH2 OH), formula II or formula III or its polymer (or its metal salt) [e.g. glucono-δ-lactone, starch or carboxymethyl cellulose (calcium salt)]. The component D preferably has a water-solubility of

10. 发明专利

JPH05116453A IMAGE FORMING DEVICE 失效
公开(公告)号：JPH05116453A
公开(公告)日：1993-05-14
申请号：JP28435691
申请日：1991-10-30
申请人： SEIKO EPSON CORP
发明人： KITAMURA KAZUHIKO , ISHII ISAO , UEHARA MASAMITSU , TANIGUCHI MAKOTO , MIZUMA ISAO , OYAMA NORIKO
IPC分类号： G03G15/00 , B41M5/26 , B41M5/36 , G03C1/73 , G03G21/00
摘要： PURPOSE:To obtain a good-quality printed matter of a high quality level in an efficient and stable manner by providing a means for detecting a life or replacing timing of an image forming body containing an optically reversible layer in an optical printer. CONSTITUTION:A contact switch 22 is actuated by a plate cam 21 provided on a rotating shaft 20 of an image forming body 3. The number of the action is counted by a counter 23. The accumulated rotation count is transmitted to a control circuit 24. When the count reaches a predetermined count a signal is transmitted to an indication circuit 25 to light a lamp to inform a user of a life or replacing timing.

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